if any(substring in my_str for substring in my_list): # 👇️ this runs print('The string contains at least one element from the list') else: print('The string does NOT contain any of the elements in the list') 1. 2. 3. 4. 5. 6. 7. 8. 9. 如果需要检查列表中的任何元素...
In this quiz, you'll check your understanding of the best way to check whether a Python string contains a substring. You'll also revisit idiomatic ways to inspect the substring further, match substrings with conditions using regular expressions, and search for substrings in pandas. ...
import redef find_substring_regex(s, sub):""" 使用正则表达式查找子字符串 """ pattern = re.compile(sub)if pattern.search(s):return Trueelse:return False# 定义一个字符串string = 'A New String Hello, World!'sub_string = "Hello, World!"print('例1，源字符串为：', string, ' ...
# 创建一组用于快速访问的值 self.setofvalues = set(item for sublist in self.value for item in sublist) def __iter__(self): print('Using __iter__.') # 遍历子列表的迭代器 return (item for sublist in self.value for item in sublist) def __contains__(self, value): print('Using _...
A. substring B. slice C. sub D. part 相关知识点: 试题来源: 解析 本题要求在Python中选择一个选项来获取字符串的子串。在Python中,可以使用切片(slice)操作来获取字符串的子串。切片操作使用方括号[]来指定要获取的子串的起始和结束位置,可以通过指定[start:end]来获取从start到end-1的子串。因此,...
# The string string = 'Hello World, this is a string' # The substring we are looking for substring = 'this' print(string.find(substring) # print:13, 13是字字符串的起始位置 使用正则表达式 re.search() 正则表达式是Python中非常强大的一个模块,我们用正则表达式同样可以查找子字符串(有点杀鸡用...
whitespace string is a separator and empty strings are removed from the result. >>>str1="/etc/sysconfig/selinux">>>str1.split("/") ['','etc','sysconfig','selinux']>>>str2="abc|mnt|xyz">>>str2.split("|") ['abc','mnt','xyz'] ...
substring = string[::2] print(substring) # "HloWrd" 通过切片进行字符串翻转 另一种使用 step 的方法,你可以使用它来反转字符串。只需要设置步长为负数,即可以实现从右往左切片,即可以实现字符串翻转。例子: string ='my string' # Use a negative step to reverse a string ...
1. Check if String starts or ends with Substring using Regular Expressions In Python, there.search()is used for pattern matching withregular expressions. It matches a given substring expression against the specified string and returns aMatchif the substring is present in the input text,Noneotherwis...
Naturally, it performs the same search as index() and returns the index of the start of the substring within the parent string: print(fullstring.find(substring)) # 1 Regular Expressions (RegEx) Regular expressions provide a more flexible (albeit more complex) way to check strings for pattern...